Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 4 16.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/17/2020   07:33:42   ( -69.33,-114.89) 04/17/2020   07:34:53  ( -69.19,-113.98)   39.15                71
 04/17/2020   08:24:18   (  68.80,  53.14) 04/17/2020   08:24:25  (  68.81,  53.17)    1.36                 7
 04/17/2020   09:14:59   ( -68.69,-139.38) 04/17/2020   09:13:55  ( -68.70,-139.33)    2.24                64
 04/19/2020   23:50:07   ( -69.43,   0.86) 04/19/2020   23:51:17  ( -69.31,   2.06)   49.18                70
 04/20/2020   00:40:41   (  68.80, 169.05) 04/20/2020   00:40:51  (  68.81, 169.06)    0.73                10
 04/20/2020   01:31:22   ( -68.69, -23.47) 04/20/2020   01:30:21  ( -68.70, -23.44)    1.99                61
 04/22/2020   16:06:33   ( -69.54, 116.61) 04/22/2020   16:07:42  ( -69.41, 118.09)   59.64                69
 04/22/2020   16:57:05   (  68.81, -75.05) 04/22/2020   16:57:18  (  68.80, -75.05)    0.40                13
 04/22/2020   17:47:46   ( -68.69,  92.43) 04/22/2020   17:46:48  ( -68.70,  92.45)    1.15                58
 04/25/2020   08:22:58   ( -69.60,-127.57) 04/25/2020   08:24:07  ( -69.52,-125.88)   66.33                69
 04/25/2020   09:13:29   (  68.81,  40.85) 04/25/2020   09:13:45  (  68.79,  40.83)    2.21                16
 04/25/2020   10:04:10   ( -68.69,-151.67) 04/25/2020   10:03:15  ( -68.69,-151.67)    0.52                55
 04/28/2020   00:39:24   ( -69.72, -11.83) 04/28/2020   00:40:32  ( -69.62,  -9.85)   77.07                68
 04/28/2020   01:29:53   (  68.82, 156.75) 04/28/2020   01:30:11  (  68.83, 156.77)    2.05                18
 04/28/2020   02:20:34   ( -68.70, -35.77) 04/28/2020   02:19:42  ( -68.68, -35.79)    2.87                52